Postal code number, in most countries is
put in front of the address designation in order to
ensure the identification of a specific post office. In
Denmark zip codes were introduced in 1967 as a term for
each of the country's distribution posthuse (address
posthuse). Using a four-digit numerical code. The first
digit indicates a total of nine postal code areas, e.g.
7000 Fredericia. The second digit divides each of the
nine postal code areas in ten sections, e.g., 7100 Vejle.
These areas are further subdivided through a third
digit, e.g., 7190 Billund, and, if necessary, a fourth,
e.g. 7182 bredsten, until each address post Office got
its number. An exception to this is Copenhagen K,
Denmark and Copenhagen V and Frederiksberg C, where
individual streets pga. the large volume of consignments
have specific zip codes.
were introduced as part of the rationalisation of the
sorting work associated with the rapidly growing mail
volumes up through the 1960s. Record numbers was also a
prerequisite for the power letter sorting.